Python语言程序设计基础（1）—— 程序设计基本方法

圆的面积

import math
radius = 25
area = math.pi*radius*radius
print(area)
print("{:.2f}".format(area))

输入

name = input("输入人名：")
print("{}".format(name))
print("{}".format(name[0]))
print("{}".format(name[1:]))

斐波那契

a , b = 1,1
while a < 1000 :
    print(a,end=',')
    a, b = b,a+b
print("")

同心圆

import turtle
turtle.pensize(2)
turtle.circle(10)
turtle.circle(20)

日期与时间

from datetime import datetime
now = datetime.now()
print(now)
print(now.strftime("%x"))
print(now.strftime("%X"))

习题部分